Product Description JM110839 is especially for prisons and other large sensitive locations such as military or governmental agencies. It can also be used in Oil and Gas Storage Facilities and fields, Security Services, Military Units, Secret Services, Museums, Border Patrol and Drug Enforcement, Customs, etc. At a glance: Each unit can jam up to five frequency bands simultaneously. Continuous operation, even in hot weather, with no time limit. Secure design to avoid sabotage. Adjustable RF power output level. Turn-key design to check the system problem in time. Selection of antennas to provide more flexibility regarding jamming coverage. Special additional housing for all weather protection. Good cooling system via fans design. Heat sink design to make the system more stable. Module design .Easy to change and repair. Specification: CDMA800 850-894MHz/>=47dBm (70-75W)/23dBm/30KHz (min) GSM900 925-960MHz/>=47dBm (70-75W)/21dBm/30KHz (min) DCS1800 1805-1880MHz/47dBm/( >=50W)/20dBm/30KHz (min) PHS1900 or GSM1900:1930-1990MHz 47dBm /(>=50W)/19dBm/30KHz (min) 3G: 2110-2170MHz/47dBm (50W)/19dBm/30KHz (min) Total Power: 220W Frequency Bands: Up to five bands Power Supply: AC220V/ 110V DC27-28V Power Consumption: 1000W Shielding Radius: 300-600M (Based on back ground signal strength Net Weight:42KG Size:72*45*32cm Accessories: Omni directional antenna Power supply cable Case key, RF cables User manual Note: The jamming distances we mentioned on website are for customer’s reference only. The actual jamming distance will be varied depending on the signal strength and the use location and if full charges, etc.